TEFL Network

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  • Overview of Topology Control in Wireless Sensor Networks

    White Papers // Oct 2011 // provided by TEFL Network

    Topology control is one of the most importance issues in performance optimization for wireless sensor network. It can prolong network lifetime, reducing radio interference, ensuring network connectivity and coverage. In this paper, the authors discuss the design object of topology control, study the different network topology models and graph models ...

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  • Pseudo-Relevance Feedback Driven for XML Query Expansion

    White Papers // Nov 2010 // provided by TEFL Network

    Pseudo-relevance feedback has been perceived as an effective solution for automatic query expansion. However, a recent study has shown that traditional pseudo-relevance feedback may bring into topic drift and hence be harmful to the retrieval performance. It is often crucial to identify those good feedback documents from which useful expansion ...

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